Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving blood clotting factor
Patent
1995-06-07
1996-06-11
Wityshyn, Michael G.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving blood clotting factor
435 4, 435 696, 436 63, 436 69, 514833, C12Q 156, C12Q 100, G01N 3348
Patent
active
055254780
ABSTRACT:
The present invention provides a novel one-stage assay which uses soluble thrombomodulin for directly determining the functional status in plasma of the vitamin K-dependent coagulation-inhibiting proteins, protein C and protein S. The method comprises combining a blood plasma test sample and a coagulation-activating substance in a calcium-free solution, then adding soluble thrombomodulin and calcium ions to initiate a coagulation reaction, measuring the time required for the test plasma sample to clot, comparing the measured clot time to that of standard control plasma samples, including protein C- and protein S-deficient plasma controls, and then using the compared clot time values for determining the functional status of protein C and protein S in the individual from whom the test plasma sample was taken. The functional status of the vitamin K-dependent coagulation-inhibiting proteins is used to determine the risk of thrombosis in the host individual.
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Leary Louise N.
Wityshyn Michael G.
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